The key players profiled in the North American airflow visualization testing and certification services market include TSI Incorporated, Particle Measuring Systems, Lighthouse Worldwide Solutions, Kanomax USA Inc., Cleanroom Technology Associates, Terra Universal Inc., Air Techniques International (ATI), Emerson Electric Co., Merck KGaA / MilliporeSigma, Thermo Fisher Scientific Inc., Agilent Technologies Inc., Honeywell International Inc., 3M Company, American Cleanroom Systems, and Air Systems Balancing & Testing Service.